17 results
Generalized Hyperpigmentation Differentials
Use the Mnemonic "no skin SPARED"

Images from dermnet.nz and merckmanuals

Mnemonic from https://www.medscape.com/slideshow/dermatology-mnemonics-6011359#5 #diagnosis #differential
Hyperpigmentation Differentials ... the Mnemonic "no skin ... #symptoms #signs ... #dermatology #skin ... #skinrash
Giant Cell (Temporal) Arteritis: Pathogenesis and investigations
Risk Factors:
 - Unclear environmental triggers (may be viral, not
yrs old; F>M Signs ... /Symptoms: - Fever ... - Vasculitic skin ... Temporal #Arteritis #Pathophysiology ... #Diagnosis #Signs
Scarlet fever
• Delayed-type skin reactivity to pyrogenic exotoxin Requires prior exposure
• Diffuse erythematous eruption that generally
Scarlet fever • ... Delayed-type skin ... folds #Scarlet #fever ... diagnosis #clinical #photo ... #signs #symptoms
Sarcoidosis 
Non-caseating granulomas (Composed of T-helper & inflammatory cells) 
Clinical:
 • Disease fatal in 10% of
Constitutional: Fever ... neuropathies • Skin ... dysrhythmias • Ophthalmologic ... Sarcoidosis #Diagnosis #Symptoms ... #Signs #Pulmonary
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Regions - Frequent Differential ... Medical History: • Skin ... localizing signs ... leptospirosis • Skin ... Rickettsioses, bacterial skin
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
- Pathophysiology ... Ill-appearing, vital sign ... instability - New-onset fever ... sulfa-drug - Skin ... Targetoid #Algorithm #Differential
Kawasaki Disease: Clinical Findings
Diagnostic Criteria - Fever and 4/5 of the following:
 • Conjunctivitis
 • Polymorphous
Diagnostic Criteria - Fever ... hands & feet Signs ... - Generalized Skin ... Criteria #Diagnosis #Pathophysiology ... #Signs #Symptoms
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
response to local skin ... retinal damage) • Skin ... test (this is a skin ... Behcet disease) Differential ... diagnosis #management #signs
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Infections in HIV - Differential ... • CT: Halo sign ... • Polymorphic skin ... , • Multiple skin ... Constitutional symptoms
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Purpura, ischemic skin ... commonly affects the skin ... • Affects the skin ... cmpkx deposits skin ... Vasculitis: • Skin